File:Proposed electrification of the Milwaukee branch, Chicago and Northwestern railway (1914) (14766941602).jpg

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Identifier: proposedelectrif00case (find matches)
Title: Proposed electrification of the Milwaukee branch, Chicago & Northwestern railway
Year: 1914 (1910s)
Authors: Case, H. L Fernandez-Mareque, F Schoembs, F Whitmore, R. W
Subjects:
Publisher:
Contributing Library: Paul V. Galvin Library, Illinois Institute of Technology
Digitizing Sponsor: CARLI: Consortium of Academic and Research Libraries in Illinois

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on up toits maximum speed for a time 0D, then is retardedat a constant coasting rate for a time DE, andfinally is retarded during braking at a constantacceleration over a period of time equal to EG. The velocities, times, and distances referredto in the foregoing discussion may be representedby the three following equations: (1) ax - by - cz - 0 (2) x -f- y -f- z = T (3) ax2 - by2+cz2-v- 2axy = 2X0.682 L.Put: A __ t . ^ . ^ Then: : J+*+/.= = I Where a = 0.682 L+T2. - ZA jb— c 6- ct, is now found in terms of a and A. This is accomplished by assuming average valuesfor coasting and braking as 0.15 and 2.0, respec-tively, substituting same in the precedingequations, and solving for for different valuesof A and a. The results of such a calcula-tion are shown by the curves of Fig. 2. By use of the general equations of thespeed-time curve, table 1 was calculated, a sample of the procedure being given below: 2A= 0.682 L*T , where L is the average length of run, a factor which was determined
Text Appearing After Image:
T A B L E 1. a A T S X w-70 KW./ton 1.0 .15 175.9 24.30 38.7 48.9 4.08 .220 .2o 152.3 27.70 43.3 61.2 4.57 .284 .25 136.1 30.70 49.4 79.8 5.21 .363 .30 124.3 33.30 59.3 114.8 6.26 .477 .35 115.1 35.65 .40 107.6 37.90 .45 101.5 39.80 .... ..... .... .... 1,5 .15 175.9 24.30 26.7 50.2 6.06 .152 .20 152.3 27.70 28.9 58.7 6.56 ..190 .25 136.1 30.70 31.9 71.3 7.25 .234 .30 124.3 33.30 35.0 86.1 7.95 .282 .35 115.1 35.65 39.4 108.7 8.95 .342 .40 101.6 37.90 47.0 155.0 10.67 .437 .45 101.5 39.80 .... ..... ..... .... 2.0 .15 175.9 24.30 19.87 47.9 7.80 .113 .So 152.3 27.70 21.00 53.5 8.25 .138 .25 136.1 30.70 23.15 65.1 9.10 .170 .30 124.3 33.30 25.30 77.4 9.94 .203 .35 115.1 35.65 27.18 89.6 10.68 .236 .40 107.6 37.90 31.10 117.5 12.24 .289 .45 101.5 39.80 36.20 159.3 14.22 .357 following an investigation of the number ofstops and the distance between same. The part-icular run under consideration was chosen asthat between Chicago and Waukegan, because themaximum traffic occurs between these

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https://www.flickr.com/photos/internetarchivebookimages/14766941602/

Author

Case, H. L; Fernandez-Mareque, F; Schoembs, F;

Whitmore, R. W
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28 July 2014
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